Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4501-4520 of 9564
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A Fault Diagnosis Method for Industrial Gas Turbines Using Bayesian Data Analysis
(The American Society of Mechanical Engineers (ASME), 2010)This paper presents an offline fault diagnosis method for industrial gas turbines in a steady-state. Fault diagnosis plays an important role in the efforts for gas turbine owners to shift from ... -
Computational Study of a High-Expansion Ratio Radial Organic Rankine Cycle Turbine Stator
(The American Society of Mechanical Engineers (ASME), 2010)There is a growing interest in organic Rankine cycle (ORC) turbogenerators because they are suitable as sustainable energy converters. ORC turbogenerators can efficiently utilize external heat ... -
Laser Beam Welding of Open-Porous Metallic Foams for Application in Cooling Structures of Combined Cycle Power Plants
(The American Society of Mechanical Engineers (ASME), 2010)Within the Collaborative Research Centre 561, “Thermally highly loaded, porous and cooled multilayer systems for combined cycle power plants,” open-porous and high-temperature stable Ni-based ... -
Technical Brief: Predictions of Flow Field for Circular-Disk Bluff-Body Stabilized Flame Investigated by Large Eddy Simulation and Experiments
(The American Society of Mechanical Engineers (ASME), 2010)The objective of the current work is to shed light on simulating the flow features of nonpremixed flame stabilized by a circular-disk bluff-body with large eddy simulation technique. Two subgrid ... -
Instability Control by Premixed Pilot Flames
(The American Society of Mechanical Engineers (ASME), 2010)Premixed flames of swirl-stabilized combustors (displaced half-cone) are susceptible to thermo-acoustic instabilities, which should be avoided under all operating conditions in order to guarantee a ... -
In-Cylinder Flow Computational Fluid Dynamics Analysis of a Four-Valve Spark Ignition Engine: Comparison Between Steady and Dynamic Tests
(The American Society of Mechanical Engineers (ASME), 2010)Numerical and experimental techniques were applied in order to study the in-cylinder flow field in a commercial four-valve per cylinder spark ignition engine. Investigation was aimed at analyzing ... -
A Study on an Automatically Variable Intake Exhaust Injection Timing Turbocharging System for Diesel Engines
(The American Society of Mechanical Engineers (ASME), 2010)A new turbocharging system, named automatically variable intake exhaust injection timing (AVIEIT), is proposed. Its main purpose is to improve the performance of low-speed high torque operating ... -
Overcoming of a Resonance Stall and the Minimization of Amplitudes in the Transient Resonance of a Vibratory Machine by the Phase Modulation Method
(The American Society of Mechanical Engineers (ASME), 2010)The present paper elucidates the difficulties faced in the practical implementation of phase modulation methods in the form that was presented by Wang et al. and in the actual systems where ... -
An Active Auxiliary Bearing Control Strategy to Reduce the Onset of Asynchronous Periodic Contact Modes in Rotor/Magnetic Bearing Systems
(The American Society of Mechanical Engineers (ASME), 2010)To prevent rotor/stator contact in a rotor/magnetic bearing system, auxiliary bearings may be located along the shaft and at the magnetic bearings. Rotor responses after a contact event may ... -
A Numerical Investigation of Transient Flow and Cavitation Within Minisac and Valve-Covered Orifice Diesel Injector Nozzles
(The American Society of Mechanical Engineers (ASME), 2010)Cavitating flow within diesel injector passages has been investigated numerically using the homogeneous equilibrium model (HEM), which uses the barotropic assumption and the variable speed of sound ... -
A Cyclic Life Prediction Approach for Directionally Solidified Nickel Superalloys
(The American Society of Mechanical Engineers (ASME), 2010)The performance of heavy duty gas turbines is closely related to the material capability of the components of the first turbine stage. In modern gas turbines single crystal (SX) and directionally ... -
The Numerical and Experimental Characteristics of Multimode Dry-Friction Whip and Whirl
(The American Society of Mechanical Engineers (ASME), 2010)The nature of dry-friction whip and whirl is investigated through experimental and numerical methods. A test rig was designed and constructed to demonstrate and record the character of multimode ... -
Assessment of Multiobjective Genetic Algorithms With Different Niching Strategies and Regression Methods for Engine Optimization and Design
(The American Society of Mechanical Engineers (ASME), 2010)In a previous study (, and , 2008, “Assessment of Optimization Methodologies to Study the Effects of Bowl Geometry, Spray Targeting and Swirl Ratio for a Heavy-Duty Diesel Engine Operated at ... -
Forced Response of Mistuned Bladed Disks in Gas Flow: A Comparative Study of Predictions and Full-Scale Experimental Results
(The American Society of Mechanical Engineers (ASME), 2010)An integrated experimental-numerical study of forced response for a mistuned bladed disk has been performed. A full chain for the predictive forced response analysis has been developed including ... -
Eddy Current Damping: A Concept Study for Steam Turbine Blading
(The American Society of Mechanical Engineers (ASME), 2010)In gas and steam turbine applications a common approach to prevent the blades from high cycle fatigue failures due to high vibration amplitudes is the usage of friction damping elements. Besides ... -
Computational Design of Corrosion-Resistant Fe–Cr–Ni–Al Nanocoatings for Power Generation
(The American Society of Mechanical Engineers (ASME), 2010)A computational approach has been undertaken to design and assess potential Fe–Cr–Ni–Al systems to produce stable nanostructured corrosion-resistant coatings that form a protective, continuous scale ... -
New Steel Alloys for the Design of Heat Recovery Steam Generator Components of Combined Cycle Gas Plants
(The American Society of Mechanical Engineers (ASME), 2010)Demand for power is growing everyday, mainly due to emerging economies in countries such as China, Russia, India, and Brazil. During the last 50 years steam pressure and temperature in power ... -
Ignition and Oxidation of 50/50 Butane Isomer Blends
(The American Society of Mechanical Engineers (ASME), 2010)One of the alkanes found within gaseous fuel blends of interest to gas turbine applications is butane. There are two structural isomers of butane, normal butane and isobutane, and the combustion ... -
Effects of a Reacting Cross-Stream on Turbine Film Cooling
(The American Society of Mechanical Engineers (ASME), 2010)Film cooling plays a critical role in providing effective thermal protection to components in modern gas turbine engines. A significant effort has been undertaken over the last 40 years to ... -
Experimental Analysis of the Combustion Behavior of a Gas Turbine Burner by Laser Measurement Techniques
(The American Society of Mechanical Engineers (ASME), 2010)Experimental results from optical and laser spectroscopic measurements on a scaled industrial gas turbine burner at elevated pressure are presented. Planar laser induced fluorescence on the OH ...